Charter Communications

(CHTR) - Get Report

was among the gainers Friday night in the Instinet extra session, adding 62 cents, or about 8%, to $8.33. The company, which fell 44 cents in the regular session, said in a release issued after the bell that it had hired

Concurrent Computer

(CCUR)

as a hardware provider in a planned video-on-demand launch in several markets this year.

Other gainers Friday night included

Genta

(GNTA)

, which had a ratings reiteration by Raymond James earlier. Shares were up 11% to $13. Meanwhile

Adelphia

(ADLAE)

tacked on about 5% to $6.30 after a week in which the troubled cable company was further battered after its debt rating was cut by

S&P

. Also climbing was

Transwitch

(TXCC)

, adding 1.7% to $1.80 a week after it was downgraded by Merrill.

Several biotech firms were feeling pressure to the downside after

Cellergy's

(CLGY)

steep fall during the regular session. That stock was down another 7% to $2.70 after giving up about 60% of its value on news it had pulled its application for a pain medication when it became clear the FDA would require added information. Also falling Friday night in thin trading was

Incyte Genomics

(INCY) - Get Report

, off 26% to $6.01; and

Genaissance

(GNSC)

, down 4% to $2.23.

The volume leaders were the usual Instinet suspects on a Friday afternoon with

WorldCom

(WCOM)

unchanged at $3.27;

Microsoft

(MSFT) - Get Report

down a penny to $51.40;

ADC Telecommunications

(ADCT) - Get Report

, down 3 cents to $3.57 and

Intel

(INTC) - Get Report

, down 7 cents to $28.05.